My Perfect Revenge: Flash Marriage With My Vampire Tycoon - Chapter 79: A Word

Haruto Hayase was a normal high school boy in his third year, living a quiet life until his younger sister, Haruka Hayase, joined the same school. Haruka’s beauty and charm made her the center of attention, quickly becoming the school’s prima donna. But when a notorious gang leader set his sights on her, he did everything in his power to protect her—only to fail tragically. Haruka was brutally assaulted and tortured, and Haruto himself suffered an agonizing death. However, in a twist of fate, Haruto is given a second chance, waking up a year before the events that shattered his life. Armed with the mysterious ‘Debauchery System Slave’, he vows to exact revenge on those responsible. This time, he will use his newfound powers of the system and charm to seduce the loved ones of his enemies. From their mothers, sisters, and lovers to their closest friends, Haruto will make them his. His enemies will suffer as he steals what they hold dearest, ensuring their downfall in the most devastating way possible.

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.

Rogel downloaded a magical pixel game—“Mysterious Sea”.After manifesting the kitten from the game, he fell into contemplation...

Ben, a postgraduate chemistry student, envisions a future where science unlocks the secrets of the universe. But fate has other plans. In a sudden twist, Ben dies and awakens in a strange new world, reborn as a five-year-old boy named Damian Sunblade.Damian's joy at being part of a noble family is short-lived. His family, valuing gold over blood, sells him off to another noble house to be groomed as a homemaker husband, a mere pawn in their political games. Struggling with his new reality and the remnants of his past life’s knowledge, Damian refuses to succumb to his fate.In his new household, Damian discovers that this world is governed by magic circles, Runic symbols wielding immense power. Driven by his scientific curiosity, Damian begins to experiment. Applying the laws of physics to the Rune symbols, he deciphers their secrets and invents his own unique form of magic.However, The family that bought him has their own plans for him, seeing Damian as a valuable tool to enhance their power. But Damian, ever the independent spirit, has dreams beyond servitude. He longs for freedom, a place to call his own—a life where he can use his talents without restraint.And so Damian devises a daring plan to escape. His journey is fraught with danger and intrigue, as he navigates a world filled with mystical creatures, powerful adversaries, and ancient secrets. Along the way, he forges alliances and battles enemies, all while refining his magical and scientific skills.In “The Runic Alchemist,” follow Damian Sunblade’s epic quest for independence and self-discovery. Witness his transformation from a forsaken child to a formidable Alchemist, determined to carve out an extraordinary future for himself in a world teeming with infinite possibilities.